(class filicinae is a member of ...) any of numerous flowerless and seedless vascular plants having true roots from a rhizome and fronds that uncurl upward; reproduce by spores

(class filicinae is a member of ...) genera Thelypteris, Phegopteris, and others

(... is a member of class filicinae) containing all the vascular plants that do not bear seeds: ferns, horsetails, club mosses, and whisk ferns; in some classifications considered a subdivision of Tracheophyta